<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="utf-8">
    <title>路线规划</title>
    <script src="https://cdn.staticfile.org/echarts/4.3.0/echarts.min.js"></script>
</head>
<body>
<div id="main" style="width: 600px;height:400px;"></div>
<script src="chart.js"></script>
</body>
</html>
